(19)

(11)

EP 2 576 868 A2

(12)

(88) Date of publication A3: 02.02.2012 (43) Date of publication: 10.04.2013 Bulletin 2013/15 (21) Application number: 11785958.7 (22) Date of filing: 20.05.2011

(51) International Patent Classification (IPC):  C23G 1/08(2006.01) B21B 45/04(2006.01) (86) International application number: PCT/CA2011/050316 (87) International publication number: WO 2011/147037 (01.12.2011 Gazette 2011/48)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 27.05.2010 US 348924 P (71) Applicants: Dyck, John Wayne Winkler, Manitoba R6W 4A7 (CA) Mathews, Matthew Maris Winkler, Manitoba R6W 4A7 (CA)	(72) Inventors: Dyck, John Wayne Winkler, Manitoba R6W 4A7 (CA) Mathews, Matthew Maris Winkler, Manitoba R6W 4A7 (CA) (74) Representative: Franke, Dirk  Franke & Partner Patent- und Rechtsanwälte Widenmayerstraße 25 80538 München 80538 München (DE)